diff --git a/ts/routes/deck-options/FsrsOptions.svelte b/ts/routes/deck-options/FsrsOptions.svelte
index f573a0278..a2eb36fe3 100644
--- a/ts/routes/deck-options/FsrsOptions.svelte
+++ b/ts/routes/deck-options/FsrsOptions.svelte
@@ -391,7 +391,9 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     </button>
 </div>
 
-<div class="m-2">
+<hr />
+
+<div class="m-1">
     <button class="btn btn-primary" on:click={() => (showSimulator = true)}>
         {tr.deckConfigFsrsSimulatorExperimental()}
     </button>
@@ -419,4 +421,9 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         align-content: center;
         flex-wrap: wrap;
     }
+
+    hr {
+        border-top: 1px solid var(--border);
+        opacity: 1;
+    }
 </style>